Ryūsaku Tsunoda (角田 柳作, Tsunoda Ryūsaku; 8 September 1877 - 29 November 1964) was a Japanese scholar and is known as the "father of Japanese studies" at Columbia University. He was directly responsible for developing the Japanese language and literature collection at Columbia's library. Prominent among the former-students who credit his influence as formative is Donald Keene, who had himself become a later Dean of Japanese studies in the United States.
Source: “Ryūsaku Tsunoda”, English Wikipedia (CC BY-SA 4.0), excerpt